Adjustable shelving bracket



FIG. 1 is a right side elevational view of an adjustable shelving bracket showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for an adjustable shelving bracket, substantially as shown. 